<u>Phobia</u>is described as the irrational or obsessive fear or anxiety that an individual faces from a particular thing or situation. It is basically <em>a situational fear in which an individual becomes extremely dreaded and this dread makes them go the length of avoiding it as it then gets converted to a phobia(as a learned response from the experience).</em> These could be caused due to several factors that could be genetic or environmental and fear/anxiety is the prime symptom that the person faces in such a situation.
Should be D, adapted. I don't see how the fish enlarged or departed anywhere, and it didn't waver, but it has a special adaptation to the cold, so the best answer is adapted.
